<nav class="navbar navbar-inverse navbar-fixed-top">
  <div class="container-fluid">
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <a class="navbar-brand" href="#">积分商城后台管理</a>
    </div>
    <div id="navbar" class="navbar-collapse collapse">
      <ul class="nav navbar-nav navbar-right">
      {% if g.user %}
        <li><a href="#">欢迎 {{ g.user.nickname }}</a></li>
      {% endif %}
        <li><a href="#">设置</a></li>
        <li><a href="#">个人信息</a></li>
        <li><a href="{{ url_for('accounts.logout') }}">退出登录</a></li>
      </ul>
      <form class="navbar-form navbar-right" action="{{ url_for('mall.product_list', page=1) }}">
        <input type="text" class="form-control" name="name" placeholder="输入商品名称">
        <input type="submit" class="form-control" value="搜索">
      </form>
    </div>
  </div>
</nav>